Hypothyroidism, i.e., hypothyroidism, causes elevated blood pressure, mainly due to the patient’s reduced secretion of thyroid hormones, causing peripheral vasoconstriction, reduced vascular elasticity, causing elevated blood pressure; at the same time, patients with hypothyroidism will have dyslipidemia, resulting in atherosclerosis, reduced vascular elasticity, narrowing of the lumen, and thus elevated blood pressure. Hypothyroidism is a systemic hypometabolic syndrome caused by hypothyroid hormonemia or thyroid hormone resistance due to various reasons, and its pathology is characterized by the accumulation of mucopolysaccharides in tissues and skin, which is manifested as mucous edema. Early patients with mild disease may have no specific symptoms. Typical patients may have symptoms such as chills, fatigue, swelling sensation of hands and feet, drowsiness, memory loss, less sweating, joint pain, weight gain, constipation, elevated blood pressure, menstrual disorders in women or excessive menstruation, and infertility. It is recommended that patients with hypothyroidism should go to the hospital in time if they have elevated blood pressure.